Sher said Di Maulo was in the Mafia's Calabrian branch, which ran Montreal in the 1970s in opposition to the Mob-linked Rizzuto family.

Di Maulo escaped a jail sentence in 1971 after a successful appeal on a triple murder case that was committed in his bar, La Casa Loma. The bar was located near Saint-Laurent Boulevard in Montreal at the time.

Di Maulo's death comes a month after Montreal's Sicilian Mob boss, Vito Rizzuto, was released from prison and returned to Canada after serving an eight-year sentence for his role in the killing of three leaders of New York's Bonanno crime family.